Question

If by successive division of bacterium every minute, a small test tube is filled up in one hour. Then lower half of the test tube will be filled up in how much time?

• A. 30 minutes
• B. 29 minutes
• C. 59 minutes
• D. 15 minutes

Answer 1

The correct option is C 59 minutes

The generation time of bacterium is one minute. Hence, it takes the bacteria one minute to double in number.
Therefore, if the test tube is filled in one hour, The test tube is half full in 59 minute.